Coin lock



Dec. 20, 1927.

ca. CHAPMAN COIN LOCK Filed June 11. 1921 2 Sheets-Sheet l INVENTOR %M LQ 0uv\ BY ATTORNEY a) Dec, 20, 1927.

G. CHAPMAN COIN LOCK Filed June 11, 1921 2 Sheets-Sheet 2 INVENTOR looking. from the exterior.

40 throughout the several views.

Patented Dee -20, 1927. I

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COIN LOCK."

na ncmoa ,flled June 11,

p p This invention relates to coin lockssuch as are commonly employedfor unlocking a door whenva coin is inserted therein. a a The object of the invention is toprovide a coin lock of extreme simplicity of cona, f truction but highlyeflicient for the purpose for which it i s-designed, and wherein econof my of space and cost of manufacture isobtained. a p

A further object of the invention is to 1 provide-a'lock of the character set forth wherein few parts are employed and the control of thelook is effected through the coin itself;

16 A further object the invention ,isto

provide a lockiof the above character which will re'spondto coins and othertokens of a given size, but which will reject coins of other sizes. v

l0 Further objects of the-invention will appear more fully'hereina'fter, asset forth in the accompanying drawings, and pointed out in the appended claim.

Referring to the drawings:

Figure 1 is a view of a coin lock embodying my invention, partially hrokenawa y.

Fig. 2 is a sectional view of the same i v Fig, 3is a view in elev-at-ion 'ofthe interior 0f thefront portion of the lock.

7 x Fig tfis a similar yiew of the/rear por- *Fig.;;;5'-is ,a sectional view taken on the line ;5- ;5,of Fig. 4,:and looking in the direction-of the arrows, a l a Fig. 6 is an enlarged view with the bolt structure shown in Fig. 4. 1 a

The same partis designated by the same reference character wherever it occurs a It is: amongv the special purposes of my present invention to provide a lock which will permit the actuationthereof at all times from the interior ofthe door, or the like, which is to be locked,-but which will permit the actuation of-the look from the exterior only when acoin of a predetermined Sizeis inserted-therein. As generically indicated hereinbefore, 1' form the lock of my invention .in two parts namely, a rearplate 1 l which is adapted to be screwed or-otherwise suitably secured to the door; through holes 2. Formed on the face of; the rear plate 1 are lugs 3 beveled interiorlyto form axdoyetail g-uideway for the bolt 4 which is provided with the usual beveledIhead 5.; A

1921. Serial no. 476,111.

tends through the door to which the plate is fastened, andthe shaft has has mounted on the interior thereof a collar 8 which has secured, thereto or formed integrally therehandlefiis securedto a shaft 7 which ex 7 with a bell crank lever one end of which is provided with a pin 9 extending parallel to the axis of the shaft 7 andjpositioned there: belowmeans for attachment, for, example,

an orifice 10, to one end of a tension spring lug 3 and is rounded, as shown, to form a socket connection with the bolt 4 through the medium of a rounded depression16 cut in the lower edge thereof. p From theforegoing it will readily be apparent that when the handle 6 that is, the handle of the interior \ofthe door, is rocked,

say clockwise, the shaft 7 is rockedcoim cidently therewith, and, consequently, the

bell crank is rocked, the leg l lthereof moving clockwise and drawing the bolt 4, and,

consequently,its head ,5, toward the right to unlock the door. A coin guide bell-crank 17 is pivotally secured tothe rear plate 1, as

at l8,-with'one legv 19 thereof extendingover 1 i the face of the bolt 4 and adapted to be movedtowardsthe right when the bolt is drawn-to the right. The boss 13 is provided "with a pin 19 to form ajournal for a mas- V ter key, the function and structureof which will be more fully hereinafter set forth.

It will be understood that the spring 11 normally tends to retain the bolt in its locked position so that when the handle 6 is released the bolt isthrown toits left hand position. The bottom of the plate 1 is provided with a lug 20 extending at right angles relative thereto from which extends, a threaded orifice 21. Positioned on either side; thereof and towards the bottom relative thereto are additional lugs 22 which are utilized to fornr a support for a coin removal lock that-has a part provided to permit the ready removal of coins without interfering with the coin lock assembly. a

' The cover of the lock structure is illus-r trated in Figs. .1, 2 ,andt3 and consists of a cover plate provided with side walls '31 formed integrally therewith so 1 as to completely enclose the-base or back plate 1;. In an aligned position relative to shaft 7 I provide a shaft 35 controlled by a handle 36.

The shaft 35 has secured thereto on the in-.-

terior of the case a lever or cam lug 40 which is adapted to move over the face of hand side of the interior of the case/of the lock, shown in Fig. 8 (that is, the lefthand side of the completed assembly looking'from the exterior of the door) I provide two bosses 45 whichform a seat for suitable screws 46 in vertical alignment with each otherbut spaced apart. The screws 46BX- tend through slots47 formed in a boss 48 whereby the boss 48 is permitted to move upwardlyand downwardly relative to the case by means of the slot therein: The end of the boss 48isprovided with a hook portion 49 curved, as'shown, to come into alignment'with a keyhole 50 provided in the face of the case. Theupper end ofthe sliding member48 is provided with an angle piece 51 which is adapted tocome-in contact with the pin 9 of the bell crank 14 carried by the shaft 7. The lower ends of the sides 31 of the structure are provided with bosses 55 the end surfaces of which form. seats for the coin removal lock, and the inner surface of the case isprovided with a similar boss 56 to form a bearing for the bolt of the coin lock. The inner surface of the outer case is provided with a boss 20* provided with an orifice 21 therethroug'h which is adapted to come into alignment withthe piece 20 of the base plate 1, to lpermit a screw 60 to be inserted therein to readily hold the'parts together at-"the'base. The case is also provided with a smooth faced boss 60 which is positioned in alignment with the smooth surface 61 of the plate, and thetop edge of the case is cut away, as shown at 62, fiush with 'the boss 60 to thereby efiiciently and economically form a coin chute leading to the coin rests 41 and 43 on the cam 40 and bolt 4, respectively. The top end of thecase is also provided with a projecting lug 64 which is adapted to be seated in the lug seat 65 formed in the back of the plate. a

In assembling the coin lock of my invention, the plate 1 is screwed into place and the shaft 7 thereof passed through the door and secured to the assembly. The. case is then positioned thereon byineans of the lug 64 and the lug seat65, with the parts 20 and 20 aligned with each other. A suitable 36 may beturned at'will without effecting the operation of the bolt. As soon, however,

as a ,coinbf-the proper designation is deposited in the coin s'lot 61,the coin guide arm 19 deposits the same on the coin rests 41 and 43 formed on the bolt-actuatin the bolt 4, respectively, where y when the handle 36 is next turned the :bolt is' withdrawn from its locking positionthrough the rotation of the shaft 35, cam 40, coin seat41',

andthe coin lug 43, as will readily be a parent, with the result that the bolt is wit drawn from engagement with its latch; The arm 17 "of the coin guide assumes the position shown in full lines in Fig. 4 whereby adcam 40 and 'ditional coins cannot be inserted into the look. When the handle 36 is released, the cam 40 and bolt 4return to normal position, that is with the bolt 5 protruding. As the door is closed the bolt 5 is forced back byleasoll of its engagement with the late 80. This carries the coin lug 43 out 0 engagement with the coin Whichis then free to drop in the bottom of the case. i

It will be apparent in the structure thus described that control of the lock is'at' all i a times effective through the'operation ofthe inner handle and is only effective through the operation of the outer handle whena c0111 of theproper size has been 'deposited in the lock. If the coin is too small it is apparent that it will passfreelyby the coin-rests 43 and 41, the size of the slot formed by the members 61, 62 preventing coins of a larger size than that desired from being utilized.

When, however, it is desired'to operate the "door from the exterior without the use of coins, a key, for example, the key 90, is in- 'serted through theorifice 50 in the caseon the key pin 19. Arotation thereof raises gages the pin 9 of the bell crank lever 14, and thereby through the rotative movement imparted to the bell crank, withdraws the bolt in the manner hereinbefore described.

the member 48 so that the angle piece 51 eni Many modifications and changes in details willreadily occur to those skilled in the art withoutdeparting from the spirit and scope of my invention as defined in the claim,

structure embodying the principles of my inand I, therefore, desire to have the foregoing description and illustration of one specific' rather than in a limiting sense and,

Having now set forth the objects and nature of my invention, and a construction embodying the principles thereof, what I claim as new and useful and of my own invention, and desire to secure by Letters Patent is g In a coin lock structure, the combination with a spring bolt, a coin stop on said bolt,

my hand on this third day of June A. D., 1921. r

a rotatable shaft operatively connected to the boltto actuate the same in either direction; a second shaft aligned with said first named for actuating a coin into position between said coin stops to cause the actuation of said bolt actuating shaft through the operation of said independent shaft when a coin is positioned between the coin stops, and independent means for withdrawing said bolt.

In testimony whereof I have hereunto set GEORGE CHAPMAN. 

